Missing Authentication for Critical Function in ActiveMQ Artemis and Artemis - CVE-2026-27446
Published: March 4, 2026
Vulnerability identifier: #VU123489
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-27446
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to missing authentication checks within the Core protocol. A remote non-authenticated attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker and inject messages into any queue and/or exfiltrate messages from any queue via the rogue broker.
Affected software
ActiveMQ Artemis
Artemis
AMQ Broker
Artemis
AMQ Broker
How to mitigate CVE-2026-27446
Install updates from vendor's website.
Artemis - update to 2.52.0
AMQ Broker - addressed in versions 7.12.6, 7.13.4
AMQ Broker - addressed in versions 7.12.6, 7.13.4